Updates and Revision History

The latest version of the Pathloss 6 program can be downloaded using the link in your license email or by entering your serial number in the space below and clicking Download.

Pathloss 6 - Version 6.00.21

Version 6.00.21 - November 23, 2022

  • Support for multi-monitor displays. Frame windows will now remember their last position across monitors. Other windows and dialog boxes will be positioned relative to their parent window.
  • Carrier Aggregation and Refractivity Gradient - K Reference dialog layouts modified to better fit smaller displays.
  • Fixed y-axis scaling in the Refractivity Gradient - K Reference dialog.
  • Fixed ITU 530-8 Percent of time dN/dh dialog window.
  • Fixed ASTER download problem for latitudes between 10N and 9S.
  • Added Ctrl-G keyboard shortcut to open the Group Manager dialog.
  • Added a draggable title bar to measure distance tool results dialog.
  • Fixed crash in diffraction module when manually defining isolated obstacle radius.
  • Fixed crash when entering power in an adaptive modulation radio data entry form.


Pathloss 6 - Version 6.00.20

Version 6.00.20 - November 9, 2022

  • USGS NED 1/3" has been added to the automatic terrain data download. This data covers the entire USA.
  • ASTER Global 1" DEM has been added to the automatic terrain data download. This data covers the world from 83 degrees north to 83 degrees south, more at Global Terrain Data Sources.
  • All network drawing operations now implemented in Direct2D for increased performance and future improvements. 
  • Correction to Local Studies showing incorrect antenna pattern when using non-tiled maps display.
  • Fixed Transmission Detail Report bug which was outputting bad data for channel assignments.


Pathloss 6 - Version 6.00.19

Version 6.00.19 - November 3, 2022

  • Ongoing improvements to network drawing efficiency.
  • Fixed bug that would cause a muitiband plz file to open incorrectly if it was saved while on a band other than Band 1.
  • Fixed Google Earth export bug that failed on links with channels.
  • Small change to local studies to reduce the required number of profile calculations.


Pathloss 6 - Version 6.00.18

Version 6.00.18 - October 25, 2022

Complete release notes are available at: Version 6.00.18

  • CSV Report - Column Definition File (cv5) Format Correction. IMPORTANT: Column definition files (cv5) created with earlier versions of Pathloss 6 must be updated or recreated. Please see complete release notes for details.
  • Network RTF Reports and Copy operation now work when using Tiled Map Backdrop
  • Extents are now shown correctly in the Extents and Layers dialog box when using Tiled Map Backdrop.
  • Network display will no longer zoom to the extents when exiting Site List, Link List, Display Options, GIS Configuration Options, etc.
  • Fix to RTF profile drawing problem causing hatch fill to be drawn in the wrong location.
  • Corrected problem when exporting to Version 5 link files. (Bug was introduced with changes in 6.00.16)


Pathloss 6 - Version 6.00.17

Version 6.00.17 - October 14, 2022

Complete release notes are available at: Version 6.00.17

  • Update to antenna discrimination algorithm from TIA-10 (TIA TR45 Working Group).
  • ITU 530-8 dN/dh now defaults to worst month when selecting manually.
  • Fixed crash when generating a CSV Link Report which includes channel table table entries.
  • Fixed crash when selecting multipath algorithm options.


Pathloss 6 - Version 6.00.16

Version 6.00.16 - October 5, 2022

Complete release notes are available at: Version 6.00.16

  • Pathloss Link Files now support an unlimited number of channel frequencies!
  • New user interface integrating channel assignment and frequency plan. 
  • New options for Edit-Modify in the auto link design.
  • Support for FCSA MICS Flat File generation has been added.
  • Added column for Diameter to the Antenna Index.
  • Added "Filename" to csv export, which exports the full path of the .pl* link file.
  • Fixed bug that would prevent Pathloss from starting.
  • Tweaks and Fixes


Pathloss 6 - Version 6.00.15

Version 6.00.15 - September 2, 2022

Complete release notes are available at: Version 6.00.15

  • Apply Link Template updated to work with Multiband Links
  • Keyboard Shortcut Rework for Link Window
  • Simplified the Terrain Auto download menus and options
  • Single site interference bezier line drawing fixed
  • Window sizing changes
  • Improved Local Study Progress Bar 
  • Language changes
  • Additional fixes and corrections


Pathloss 6 Pre-release - Version 6.00.14

Version 6.00.14 - August 22, 2022

  • Changes to SRTM server
  • Fix for displaying tiled map backdrop in a shared environment
  • Fixed problem which could cause incorrect map tiles to be downloaded. If you are seeing incorrect tiles after update, right click and select Refresh Map Tile or use the method below.
  • Added Operation to delete locally cached map tile images for the current style: Configure - GIS System - Network Display - Map Operations - Delete Cached Map Tiles.
  • Fixed bug which could cause left click to behave as if it clicked on a site name when nothing is there.
  • Additional fixes and corrections


Pathloss 6 Pre-release - Version 6.00.13

Version 6.00.13 - July 27, 2022

  • Dynamic coordinate grid when using Tiled Maps. This can be toggled from the Network Display Options menu or from the new toolbar button.
  • Bug fix for crash when closing the Vigants Barnett Fade Probability dialog window.
  • Bug fix for MRU loading in the Link window.
  • Big fix for changes that prevented second instances from starting.


Pathloss 6 Pre-release - Version 6.00.12

Version 6.00.12 - July 26, 2022

  • Network Site and Link painting now uses direct draw for performance improvements.
  • Added optimizations for drawing large networks with many elements.
  • ITU-R P.835-6 atmospheric data available with all fade methods
  • ITU-R P.530-18 now uses the limits for the regression parameters   


Pathloss 6 Pre-release - Version 6.00.11

Version 6.00.11 - July 14, 2022

  • Repackaged ITU 835-6 data for smaller setup file
  • Bug fix - new antenna discrimination routine returned NAN at boresight 


Pathloss 6 Pre-release - Version 6.00.10

Version 6.00.10 - July 5, 2022

  • Support for GeoJSON Vector Formats and Tiled Vector Building Data
  • New 3D Antenna Discrimination Formulas
  • Local Studies Initial Rework
  • FCC ULS Database Integration

Complete release notes are available at Version 6.00.10 - Pre-release


Pathloss 6 Pre-release - Version 6.00.09

Version 6.00.09 - June 6, 2022

  • Support for GeoTIFF Raster DEM Files Using GDAL
  • Support for Terrain Data Download Through a Proxy Server
  • User Selectable GIS Directory
  • Versioning System Changes
  • Improved Error and Warning Messages
  • New GIS Tiles
  • Bug Fixes 

Complete release notes are available at Version 6.00.09 - Pre-release


Pathloss 6 Pre-release - Version 6.00.08

Version 6.00.08 - April 25, 2022

  • Updated to latest version of Microsoft software development platform.
  • Correction to export .pl5 routine that could cause an incorrect export if done from the link window with multiband files.


Pathloss 6 Pre-release - Version 6.00.07

Version 6.00.07 - April 12, 2022

  • Add Range in Design Links
  • Add Structures to Links from Network Window
  • Export To Version 5 .PL5 Format
  • Export to FCSA MICS Flat File
  • ITU-R P.835-6 Atmospheric Data
  • ITU-R P.530-18 Fade Factor Warning
  • Bug fixes

Complete release notes are available at Version 6.00.07 - Pre-release


Pathloss 6 Pre-release - Version 6.00.06

Version 6.00.06 - March 1, 2022

  • Integrated GDAL GIS Library
  • User Link ID Value Added to Networks and Links
  • Link Text CSV Export Improvements
  • Vector System Rework
  • Added Remote Desktop Operation for Windows Server 2012 and newer.
  • Bug Fixes

Complete release notes are available at Version 6.00.06 - Pre-release


Pathloss 6 Pre-release - Version 6.00.05

Version 6.00.05 - January 7, 2022

  • Removed Browse for Folder Dialog
  • Child Window Keyboard Control and UI
  • Text Import Dialogs
  • New Link Design Rules File Extension (.ld6)
  • Multiband and Carrier Aggregation XPIC fix
  • Network Window Toolbar
  • Download Update Streamlining
  • Minimum K Operation in Clearance Criteria Dialog
  • ITU P.530-8 calculates correctly when using Edit-Modify Links

Complete release notes are available at Version 6.00.05 - Pre-release


Pathloss 6 Pre-release - Version 6.00.04

Version 6.00.04 - December 23, 2021

  • Removed lower path length limit for ITU P530-17/18 fade calculation. This was used in program testing
  • Removed XPIC threshold degradation that was introduced in version 6.00.02
  • Fixed file associations in the installer 


Pathloss 6 Pre-release - Version 6.00.03

Version 6.00.03 - December 21, 2021

  • Fixed bug with design frequency when using multi-band


Pathloss 6 Pre-release - Version 6.00.02

Version 6.00.02 - December 20, 2021

  • Changes to ITU P.530 XPIC calculation
  • Fixed bug that caused ITU P.530-18 data files to be read incorrectly
  • Fixed bug that prevented adding bands to a multi-band link
  • Fixed handling of UTC8 characters in paths and filenames
  • Cosmetic and language changes

Complete release notes are available at December 21st - Pre-release


Pathloss 6 Pre-release - Version 6.00.01

Version 6.00.01 - December 8, 2021

  • Added ITU-R P.530-18
  • Added ITU-R P.530 XPIC calculation
  • Fixed ITU.R 837-7 Rain database 
  • Introduced PL6 file format
  • PLZ format is now used for passive repeater designs
  • Introduce Network Window Keyboard Accelerators

Complete release notes are available at December 8th - Pre-release


Pathloss 6 Initial Pre-release - Version 6.00.00

 Version 6.00.00 - November 12, 2021